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BIMI record checker

Looks up a domain's BIMI TXT record over DNS over HTTPS, checks the DMARC policy it requires, and shallow checks the logo URL over the proxy, leaving certificate validation out on purpose.

Type a domain and press Check BIMI
The report covers the record, the DMARC policy BIMI requires, the logo URL, and a shallow look at the logo bytes.

This tool never validates a BIMI certificate. The a= tag is read and reported, and the certificate chain, its issuer, and the chain-of-custody file are out of scope. The SVG checks are shallow string checks on the first bytes the proxy returns, not the full BIMI SVG Tiny 1.2 profile, and a pass here does not mean Gmail or Apple Mail will show the logo: each mailbox provider applies its own acceptance rules on top. A DNS miss is reported as data, not as an error, because a missing record is a normal answer.
OptionsCheck BIMI

More network tools

- Live DNS lookup (/network/dns)
- DNS explainer (/network/dns-explain)
All network tools (/network)

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Canonical HTML: https://nutter.tools/network/bimi-checker
Markdown version: https://nutter.tools/network/bimi-checker.md
Plain-text version: https://nutter.tools/network/bimi-checker.txt
Agent index: https://nutter.tools/llms.txt